CN109778662A - Across the rigid flute type beam bridge of shallow tunnel - Google Patents
Across the rigid flute type beam bridge of shallow tunnel Download PDFInfo
- Publication number
- CN109778662A CN109778662A CN201910194531.1A CN201910194531A CN109778662A CN 109778662 A CN109778662 A CN 109778662A CN 201910194531 A CN201910194531 A CN 201910194531A CN 109778662 A CN109778662 A CN 109778662A
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- tunnel
- bent cap
- rigid
- trough girder
- type beam
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- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims 1
- 239000002362 mulch Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 15
- 238000012423 maintenance Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Abstract
The present invention provides a kind of rigid flute type beam bridges across shallow tunnel, including pile foundation, bent cap and the trough girder set gradually from bottom to top, the pile foundation stands on tunnel two sides, the bent cap is located at tunnel two sides and is respectively and fixedly connected in the top of the pile foundation of respective side, and the trough girder is across in tunnel upper and both ends have just connect with the bent cap of tunnel two sides respectively.This rigid flute type beam bridge across shallow tunnel provided by the invention, using groove profile girder construction, groove profile girder construction height itself is low, meets highway layout absolute altitude and the requirement of tunnel anti-floating when enabling across shallow tunnel simultaneously；Trough girder has just connect with bent cap, is not required to setting support using rigid configuration formula, maintains work during reducing operation.
Description
Technical field
The present invention relates to bridge field more particularly to a kind of rigid flute type beam bridges across shallow tunnel.
Background technique
The highway layout in Midspan sag tunnel is usually to build a bridge in tunnel top, and the prior art is usually to directly adopt
Small Precast Box girder construction, as shown in attached drawing 1 ~ 2, the disadvantages of this solution is: as used the girder construction, due to the girder construction sheet
Height degree is larger, highway layout absolute altitude determine in the case where, it is often necessary to shed the certain thickness soil body of tunnel top, across
More shallow tunnel when, after shedding the certain thickness soil body of tunnel top, will lead to that tunnel top earthing is excessively thin, and tunnel anti-floating cannot
It meets the requirements, i.e., cannot meet highway layout absolute altitude and the requirement of tunnel anti-floating simultaneously；And the girder construction support be located at ground with
Under, heavy workload is maintained, on-call maintenance is such as unable to, the durability of support can be seriously affected.
Summary of the invention
The purpose of the present invention is to provide a kind of rigid flute type beam bridges across shallow tunnel, it is intended to existing for solving
The bridge beam body structure in Midspan sag tunnel cannot meet highway layout absolute altitude simultaneously and tunnel anti-floating requires and support maintenance
The big problem of maintenance work amount.
The present invention is implemented as follows:
The present invention provides a kind of rigid flute type beam bridge across shallow tunnel, including set gradually from bottom to top pile foundation, bent cap
And trough girder, the pile foundation stand on tunnel two sides, the bent cap is located at tunnel two sides and is respectively and fixedly connected with the pile foundation in respective side
Top, the trough girder is across in tunnel upper and both ends have just connect with the bent cap of tunnel two sides respectively.
Further, the trough girder includes precast section and pours section behind precast section two sides, the precast section
Both ends be overlapped on respectively the outer ledge on the bent cap of tunnel two sides and with bent cap tool it is at regular intervals, pour section after described and be located at
It is engaged on the bent cap and with the precast section, the precast section is fixedly connected by pouring section after described with the bent cap.
Further, the pile foundation is cast-in-situ bored pile.
Further, the trough girder is single hole Pre-stress Concrete U-Shaped Beam.
Further, the bent cap is armored concrete bent cap.
Further, the distance between the trough girder bottom and tunnel structure top are not less than 2m.
Further, the trough girder, which is arranged side by side, multiple tracks.
Further, the both ends of the trough girder extend outwardly respectively is provided with attachment strap, has and institute below the attachment strap
State the bracket that trough girder or bent cap are connected.
Compared with prior art, the invention has the following advantages:
This rigid flute type beam bridge across shallow tunnel provided by the invention, using groove profile girder construction, groove profile girder construction itself
It is highly low, meet highway layout absolute altitude and the requirement of tunnel anti-floating when enabling across shallow tunnel simultaneously；Trough girder is rigid with bent cap
It connects, setting support is not required to using rigid configuration formula, maintains work during reducing operation.The present invention is by common trough girder and routine
Rigid structure combines, and has both played the low advantage of trough girder structure height, while rigid structure is utilized and is not required to setting support, reduces fortune
The characteristics of work is maintained during battalion, the structure simple structure, stress is clear, and design and construction is convenient, repairs and supports after operation
Shield workload is small, short construction period small to railway tunnel safety and Influence to operation under bridge, and project cost is relatively low.
Detailed description of the invention
Fig. 1 is the elevation of the small box girder bridge of the prior art；
Fig. 2 is the sectional view in the direction A-A of Fig. 1；
Fig. 3 is a kind of elevation of the rigid flute type beam bridge across shallow tunnel provided in this embodiment；
Fig. 4 is a kind of partial schematic diagram of the rigid flute type beam bridge across shallow tunnel provided in this embodiment；
Fig. 5 is the sectional view in the direction A-A of Fig. 4.
Description of symbols: section, 4- attachment strap, 5- ox are poured after 1- pile foundation, 2- bent cap, 3- trough girder, 31- precast section, 32-
Leg.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figures 3 to 5, the embodiment of the present invention provides a kind of rigid flute type beam bridge across shallow tunnel, including certainly
Pile foundation 1, bent cap 2 and the trough girder 3 set gradually on down, the pile foundation 1, which stands on tunnel two sides and every side, has at least one
A pile foundation 1, the bent cap 2, which also is located at tunnel two sides and every side, has at least one bent cap 2, and each bent cap 2 is respectively and fixedly connected in correspondence
The top of the pile foundation 1 of side can be the 1 affixed bent cap 2 in top of a pile foundation, be also possible to multiple 1 tops affixed one of pile foundation
A bent cap 2, the trough girder 3 have just connect across in the bent cap 2 of tunnel upper and both ends respectively with tunnel two sides, and centre is not provided with propping up
Seat, the trough girder 3 can be one, can also be arranged side by side multiple, and a bent cap 2 can be with one or more trough girders 3
It just connects, can specifically be arranged as needed.
This rigid flute type beam bridge across shallow tunnel provided in an embodiment of the present invention, using 3 structure of trough girder, groove profile
3 structure of beam height itself is low, meets highway layout absolute altitude and the requirement of tunnel anti-floating when enabling across shallow tunnel simultaneously；Groove profile
Beam 3 has just connect with bent cap 2, is not required to setting support using rigid configuration formula, maintains work during reducing operation.The present invention will be common
Trough girder 3 combines with conventional just structure, has both played the low advantage of 3 structure height of trough girder, while rigid structure is utilized and is not required to
The characteristics of support is arranged, maintains work during reducing operation, the structure simple structure, stress is clear, design and construction side
Just, it is small that workload is maintained after operation, short construction period small to railway tunnel safety and Influence to operation under bridge, project cost
It is relatively low.
As shown in figure 4, refining the mode that the trough girder 3 has just connect with the bent cap 2, the trough girder 3 includes precast section
31 and section 32 is poured behind 31 two sides of precast section, the both ends of the precast section 31 are overlapped on the bent cap 2 of tunnel two sides respectively
On and have with the outer ledge of bent cap 2 it is at regular intervals, two sides it is described after pour section 32 and be located at the described of tunnel two sides
Engaged on bent cap 2 and with the precast section 31, and after pour section 32 reserved steel bar and bent cap 2 reserved steel bar with
It pours section 32 after described to be combined as a whole, to be fixedly connected on the trough girder 3 and the bent cap 2 by pouring section 32 after described
Together.After pour that section 32 is trench structure with precast section 31 and the two shape matches, and after pour the outer ledge of section 32 just
It is concordant with 2 outer ledge of bent cap, so that structure is more smooth neat.When construction, first construct pile foundation 1 and bent cap 2, while in Liang Chang
The precast section 31 of trough girder 3 is made, bent cap 2 and precast section 31 pour a section reinforcing bar, 3 precast section 31 of trough girder after reserving in construction
It is placed on bent cap 2 by hanging device, 32 concrete of section is poured after pouring, trough girder 3 and bent cap 2 connected integral.
Above-described embodiment is further refined, the pile foundation 1 is cast-in-situ bored pile, and the trough girder 3 is mixed for single hole prestressing force
Solidifying soil trough girder 3, the bent cap 2 are armored concrete bent cap 2, overall structure simple structure, and fixation is easy for construction.
It is further preferred that being not less than 2m the distance between at the top of 3 bottom of trough girder and tunnel structure, thus tunnel
The thickness of earth covering at top can be not less than 2m, meet the requirement of tunnel anti-floating.
As shown in figure 5, multiple tracks can be arranged side by side in the trough girder 3 when bridge floor is wider, per pass trough girder 3 can divide
Open it is prefabricated, to mitigate lifting weight.
As shown in figure 3, it is further preferred that the both ends of the trough girder 3 extend outwardly respectively is provided with attachment strap 4, vehicle
Buffer function can be played when driving, prevents bumping at bridge-head, and the bottom of the attachment strap 4 can be concordant with 2 top of bent cap or be higher than lid
2 top of beam passes through ox as shown in figure 4, having the bracket 5 being connected with the trough girder 3 or bent cap 2 below the attachment strap 4
5 structural support attachment strap 4 of leg keeps attachment strap 4 more firm.
This rigid flute type beam bridge across shallow tunnel provided in an embodiment of the present invention, be suitable for highways and streets,
Town road, service lane and taxiway pass through in shallow tunnel location (referring mainly to thickness of earth covering no more than 2 meters) top
When, it, can not be using conventional prefabricated case beam if bridge structure height is strictly limited, and requires strictly driving ride comfort and comfort
The case where when bridge is crossed over, is one and is able to satisfy in many ways using 3 structure of single hole Pre-stress Concrete U-Shaped Beam of the present embodiment
The preferable selection that face requires.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of rigid flute type beam bridge across shallow tunnel, it is characterised in that: including set gradually from bottom to top pile foundation, lid
Beam and trough girder, the pile foundation stand on tunnel two sides, and the bent cap is located at tunnel two sides and is respectively and fixedly connected with the stake in respective side
The top of base, the trough girder is across in tunnel upper and both ends have just connect with the bent cap of tunnel two sides respectively.
2. crossing over the rigid flute type beam bridge of shallow tunnel as described in claim 1, it is characterised in that: the trough girder includes pre-
Section processed and section is poured behind precast section two sides, the both ends of the precast section be overlapped on the bent cap of tunnel two sides respectively and
It is at regular intervals with the outer ledge tool of bent cap, section is poured after described to be located on the bent cap and engage with the precast section,
The precast section is fixedly connected by pouring section after described with the bent cap.
3. crossing over the rigid flute type beam bridge of shallow tunnel as described in claim 1, it is characterised in that: the pile foundation is that drilling fills
Infuse stake.
4. crossing over the rigid flute type beam bridge of shallow tunnel as described in claim 1, it is characterised in that: the trough girder is single hole
Pre-stress Concrete U-Shaped Beam.
5. crossing over the rigid flute type beam bridge of shallow tunnel as described in claim 1, it is characterised in that: the bent cap is mixed for reinforcing bar
Solidifying earth mulch beam.
6. as described in claim 1 cross over shallow tunnel rigid flute type beam bridge, it is characterised in that: the trough girder bottom with
It is not less than 2m the distance between at the top of tunnel structure.
7. crossing over the rigid flute type beam bridge of shallow tunnel as described in claim 1, it is characterised in that: the trough girder is set side by side
It is equipped with multiple tracks.
8. crossing over the rigid flute type beam bridge of shallow tunnel as described in claim 1, it is characterised in that: the both ends of the trough girder
Extend outwardly respectively and be provided with attachment strap, there is the bracket being connected with the trough girder or bent cap below the attachment strap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194531.1A CN109778662B (en) | 2019-03-14 | 2019-03-14 | Rigid frame groove type beam bridge crossing shallow-buried tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194531.1A CN109778662B (en) | 2019-03-14 | 2019-03-14 | Rigid frame groove type beam bridge crossing shallow-buried tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109778662A true CN109778662A (en) | 2019-05-21 |
| CN109778662B CN109778662B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910194531.1A Active CN109778662B (en) | 2019-03-14 | 2019-03-14 | Rigid frame groove type beam bridge crossing shallow-buried tunnel |
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Citations (14)
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|---|---|---|---|---|
| JP2001200608A (en) * | 2000-01-20 | 2001-07-27 | Nkk Corp | Upper structure of bridge or the like and construction method therefor |
| JP2001336115A (en) * | 2000-05-29 | 2001-12-07 | Nkk Corp | Rebuilding method of bridge |
| KR200284234Y1 (en) * | 2002-01-04 | 2002-08-10 | 전혜관 | prestressed concrete girder bridge structure rigidly joined to abutment by prestressing |
| KR20080052303A (en) * | 2006-12-06 | 2008-06-11 | 에이버겔디 지 빔 피티와이 리미티드 | Continuous span structure |
| KR20090045825A (en) * | 2007-11-02 | 2009-05-08 | 롯데건설 주식회사 | With h-typed cross section member for channel bridge |
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| JP5539554B1 (en) * | 2013-02-04 | 2014-07-02 | 黒沢建設株式会社 | Girder bridge connection structure and girder bridge structure |
| CN204530739U (en) * | 2015-04-10 | 2015-08-05 | 中铁建大桥工程局集团第二工程有限公司 | A kind of super shallow-buried tunnel and it is also built the construction structure of building |
| CN106498814A (en) * | 2016-12-19 | 2017-03-15 | 中铁第五勘察设计院集团有限公司 | A kind of construction equipment of city track traffic U type beam solid concrete roabed and method |
| CN207079460U (en) * | 2017-07-31 | 2018-03-09 | 北京市市政工程设计研究总院有限公司 | Economical no-top plate precast reinforced concrete combines simply supported beam |
| DE102017131351A1 (en) * | 2016-12-28 | 2018-06-28 | Max Bögl Stiftung & Co. Kg | Trough-shaped superstructure for a bridge, bridge, prefabricated part for a trough of a bridge and method for the construction of a bridge |
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2019
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| CN109371799A (en) * | 2018-10-29 | 2019-02-22 | 中铁第四勘察设计院集团有限公司 | Streetcar track beam steel structure |
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| CN109778662B (en) | 2024-04-02 |
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